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    <title>Document</title>
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    <script>
        //大整形
        let n = 321n;
        console.log(n,typeof(n));

        //函数;
        let m = 123;
        console.log(BigInt(m));

        //大数值运算;
        let max = Number.MAX_SAFE_INTEGER;
        console.log(max + 1)
    </script>
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